In this video Dr. Anderson explains what sulfites are, how they differ from sulfates, and why they can become toxic when they accumulate in the body. He describes the two main sources of sulfites—internal production from the breakdown of thiol‑containing molecules such as glutathione, lipoic acid, cysteine, and methyl‑cycle intermediates, and external intake from foods and drinks like red wine and preservatives. The central detox pathway involves the enzyme sulfite oxidase (SUOX), which requires the trace mineral molybdenum as a cofactor to convert sulfite (SO₃) into the stable, excretable sulfate (SO₄). Dr. Anderson outlines how insufficient molybdenum, genetic SNPs affecting SUOX, or inhibition by heavy metals can choke this pathway, leading to a buildup of sulfite that manifests as a wide range of symptoms—headaches/migraines, neuro‑emotional disturbances, sleep issues, respiratory irritation, and dermatologic reactions that resemble histamine responses. He then presents a pragmatic clinical approach: short‑term molybdenum supplementation (≈500 µg daily for a month), testing for and detoxifying heavy metals when molybdenum alone is insufficient, and reducing dietary sources of sulfites. He emphasizes that these recommendations are not medical advice and should be discussed with a healthcare provider. The video concludes with a call to subscribe for more content on complex chronic illness and oncology.
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We're going to get into a question I get a lot, which is, what are sulfites? Why might I be sensitive to them? And what can they do to me, or what can they do to my health? Let's break that down right now. Hey, I'm Dr. Anderson. On this channel, we focus on all things complex chronic illness and oncology. If you like that sort of thing, please consider joining us by subscribing to the channel. So you've probably heard of sulfites because it's common to hear of Somebody may be getting a migraine and they're sulfite sensitive, or maybe there's some other, maybe a food product or like red wine or something. And whenever they have it, they get certain symptoms. Maybe they get a rash, maybe they get a headache. Why would that go on? And why does the body have problems breaking sulfites down? So the first thing is, what is sulfite? So if it ends in -ite, sulfite, that is an SO3 molecule. So that means there's 3 oxygens around the sulfur molecule. So it's sulfur surrounded by oxygen. And then you've heard of another molecule called sulfate, -ate at the end. That one is SO4, and that has 4 molecules. So in the human body, sulfates, -ate, the 4 molecules of oxygen and 1, are more stable. And that molecule is used to help you with phase 2 detoxification. Sulfites are an intermediate that is more of a toxin. So our goal in the body, and we have enzyme systems to do this is to take sulfite, I-T-E, and run it through an enzyme called sulfite oxidase, add another oxygen, and turn it into sulfate, A-T-E, so I can get rid of it out of the body. If I get stuck up at the I-T-E form, it becomes a toxin and it can be neurotoxic. It can be peripherally agitating to the body and it can irritate all sorts of things. So first off, our body has this intermediate called sulfite. With three oxygens, and it can build up in the body and be toxic. Where does it come from? Well, the way you want to think about it is it can come from two primary ways. One is internal, being we make sulfur molecules and break them down all day long, and one of the fates of broken down sulfur or thiol molecules is sulfite. The other is external, which could be from a food source or something like we mentioned red wine is famous for this or other sulfur. Products or other toxins and toxicants that would come in the body. And so they both kind of crash together at the same pathway. My body and your body are making sulfur products, the thiols, that are broken down all day long and all night long. So we're constantly creating sulfites simply by our own natural detoxification. So the internal sources can be things like the breakdown of glutathione in your body, which is a thiol, the breakdown of lipoic acid in your which is a thiol, sometimes breakdown of other products that are related like cysteine, et cetera. And then there's another big contributor which comes off of the methyl cycle down through homocysteine and then cystathionine beta-synthase. And you create an intermediate that then gets broken down in partly into sulfite as well. So our body has all of these ways to break these thiols and other thiol-related substances down because we're naturally creating them and rid of them all day and all night. Now, if you take and you also add on to that an external source, whether it be sulfites in red wine or other preservatives, other food and drink sources, et cetera, you're just increasing the amount. Now, I said at the beginning, the human body has a natural way to get rid of the sulfites by converting them to sulfates. So going from 3 oxygens to 4 oxygen through an enzyme called sulfite oxidase, often looked at as SUOX, sulfite oxidase. That's short for it. Now sulfite oxidase, like all enzymes, has a particular speed that it likes to run at. It needs particular types of cofactors to help it run. All enzymes use a cofactor to help them run. And it has a capacity for how much sulfite it can get rid of, how much it can oxidize, put extra oxygen on. And remember, the goal of sulfite oxidase is to make sulfate. Which is stable and the body can use for detox and get rid of out of the body. So sulfite oxidase can be a choke point for these problems, and this could lead to the backup and the symptoms that people get. Now, what are symptoms of sulfite sensitivity or toxicity? They can be really just about anything, but a lot of people will get headache or migraine syndromes from it. Some people will become agitated. Some people will become anxious from it. Some people may become sleepy. Some people may not be able to sleep. A lot of neurological things that go on. Also, sulfite excess can look like a histamine reaction, and people will get red blotchy patches that often are itchy, and they look very much like a histamine reaction, except that in sulfite reactions, you usually don't have a, a hive reaction where things swell up. That's more of a histamine problem. Now, one of the issues is sometimes people can have high histamine, like mast cell problems, and sulfite excess. And they will overlap with one another. So you get a little bit of both symptoms going on. So you get a lot of allergic-like phenomenon. You can aggravate your asthma or your upper respiratory problems. As I mentioned, you get headaches and neuro-emotional sorts of things that can go on and all of the dermatologic presentations. Those are the most common. There's others, but those are the most common. So when we look at sulfite oxidase, this is the way to get the sulfite out of your body. There are 2 things that will slow sulfite oxidase down. The The first one is an insufficiency of the cofactor to run that enzyme. So the cofactor to run sulfite oxidase is the mineral molybdenum. And molybdenum is a trace element. You don't need very much of it in your body, but you do need some. And there's really no known or published molybdenum deficiency. So it's not like there, you know, there's, there's other nutrient deficiencies. The molybdenum doesn't have a known deficiency, but you can have an insufficiency. Now, why might I use more molybdenum? If my body is really processing a lot of sulfites, I'm going to use more molybdenum. Also, if I have genetic SNPs at the genes that code for sulfite oxidase enzymes, so there's not just one enzyme pathway, there's a bunch of them. So if I have genetic SNPs, which you'd see on a genomic profile in the SUOX category, then I'm going to have a slower enzyme that works more inefficiently. That will make me use more of the cofactor molybdenum in this case. And so in some cases where people have sulfite issues, we will see if the administration of molybdenum, the trace element, can be helpful. Now, this is not medical advice. It's just what we do clinically, and you should check with your clinician to see if this is appropriate. But short-term, we will use 500 micrograms or more of molybdenum. It's a trace element, so you don't need much. 500 micrograms, about half a milligram. And we'll do that for a month and see if the person's symptoms improve, and then we'll back off and go to lower doses. Generally speaking, will tell you if molybdenum is the problem. But I said there are 2 ways it can slow down. So the second way that it can slow down is via interference with those enzymes. Interference could be what I just mentioned, which makes them less functional, which would be genetic problems where we don't make them very well with SNPs. The other interference that's very common and is published in the literature is heavy metals. So heavy metals, toxicant metals love enzymes because enzymes generally have an inorganic and an organic cofactor binding site. And an inorganic binding site is a metal or mineral binding site. So if I'm a toxic metal, I'm very attracted to those binding sites, even though the enzyme wasn't made for that heavy metal, it'll bind there. And then once the metal binds, in biochemistry, we usually say that metals are irreversible enzyme inhibitors, meaning they stop the enzyme from working. So when we have people People with sulfite issues that are not responsive to molybdenum, we often will test them for heavy metals, and often they will need to have some sort of depuration or detoxification from the heavy metals that they have. And then the sulfite oxidase enzyme will speed up. So obviously there's a number of other things, such as if you're really having problems, number one, see a healthcare provider, but number two, look up online high sulfite food and drink and decrease those in your intake because then that'll take some of the load off. Load off. All right, I'm Dr. A. Thank you guys for all the subscribers. Please do consider joining us as a new subscriber. We put out content like this all the time, and I'll see you guys on the next video.
